package com.itheima.Jiuye02;

public class TestBjiben {
    public static void main(String[] args) {
        Bjiben bjb = new Bjiben();
        bjb.poweron();
        Shubiao sb = new Shubiao();
        bjb.useDevice(sb);
      //  sb.open();
      //  sb.show();
       // sb.close();
        Jianpan jp = new Jianpan();
      //  jp.open();
      //  jp.close();
        bjb.poweroff();
    }
}
